We are ordained not to be dogmatic about the meanings of Discrete Letters in the beginnings of some of the Surah. This, in the least, makes them mysterious. That is just as well. In most of the places the the Holy Qur'an is as simple as common sense. After all both common sense as well as the Holy Qur'an are from our Lord Most High. This brings us to the question of Godly qualities. There must be something awe inspiring too about Allah (SWT). And something mysterious. There are many names and attributes of Allah (SWT) that have are awe inspiring. In the Holy Qur'an there are the Mysterious Verses and the Discrete Letters too. How the Discrete Letters broke down the curtains between faith and him for an American brother can be read here. An oven fresh story.